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Home >> Land Rover >> 2000 >> Range Rover SE >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System & Component Testing >> Motors, Relays & Solenoids >> Fuel Pump Relay Circuit >> Range Rover

Range Rover

  1. Fuel pump relay is in engine compartment fuse/relay box, which is located on right side of engine compartment. Before checking fuel pump relay, check inertia fuel shut-off switch located on engine compartment firewall. Check for continuity between inertia fuel shut-off switch terminals No. 1 (White/Orange wire) and No. 3 (White/Blue wire). If continuity exists, go to next step. If continuity does not exist, depress inertia fuel shut-off switch plunger to reset switch. If continuity still does not exist, replace inertia fuel shut-off switch.
  2. Turn ignition on. Measure voltage between ground and fuel pump relay terminal No. 1, located in engine compartment fuse/relay box. See WIRING DIAGRAMS . If battery voltage exists, go to next step. If battery voltage does not exist, repair power supply circuit between fuse/relay box and battery.
  3. Turn ignition off. Measure voltage between ground and fuel pump relay terminal No. 3. If battery voltage exists, go to next step. If battery voltage does not exist, check fuse No. 39 (20-amp). If necessary, replace fuse, and repair power supply circuit between fuse/relay box and battery. See WIRING DIAGRAMS .
  4. Turn ignition off. Disconnect ECM connectors. Check for continuity in Blue/Purple wire between engine compartment fuse/relay box and ECM 24-pin connector C0635 terminal No. 18. See Figure and Figure . See WIRING DIAGRAMS . If continuity exists, go to next step. If continuity does not exist, repair open in Blue/Purple wire.
  5. Check for continuity between fuel pump relay terminals No. 1 and 2. If continuity exists, go to next step. If continuity does not exist, replace fuel pump relay.
  6. Check for continuity between fuel pump relay terminals No. 3 and 5. If continuity does not exist, go to next step. If continuity exists, replace fuel pump relay.
  7. Using a fused jumper wire, connect battery voltage to fuel pump relay terminal No. 1. Using another jumper wire, connect fuel pump relay terminal No. 2 to ground. When fuel pump relay is energized, check for continuity between fuel pump relay terminals No. 3 and 5. If continuity does not exist, replace fuel pump relay.
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